No my argument is Monero fails in practice relatively worse than similar 'weight class' crypto currency assets at actually spending 'digital cash' (presumably a desirable quality of 'cash') to make legal purchases from crypto accepting sellers. This is quite evident if you survey available offerings -- vendors are far more likely to accept even the lower cap litecoin than monero (even the 'cryptwerk' website advertised by getmonero shows 2x as many vedors accepting LTC).

I do postulate that the fact it is easier to show chain of custody to the point it satisfies banks and regulated entities as part of this (even if through chain-analysis mumbo jumbo), thus other crypto currencies have lent more towards accessing more purchases in a way cash idealizes to do.

At no point was my argument simply monero fails at the same thing a pile of cash dropped through the sky might fail at and that's the end of it. I think that's a pretty silly portrayal of what I've said, made in bad faith. Although in reality I've had my cex account frozen almost every single time I've tried depositing very low, 3 digit amounts of XMR (including frozen for years) whereas you can somewhat reliably put $200-$1000 in a bank in place like USA and then use that as part of purchase that goes through KYC/AML channels.

Now if you do want to compare, say, a pile of cash falling out of the sky, vs a pile of bitcoin, vs a pile of monero and you wanted to spend it on something big that went through KYC/AML compliance. In order of what would be easiest to spend, assuming the money actually came from a legal source. Bitcoin would be the easiest to spend because you have some chance at showing it came straight from a KYC'd source because of the plaintext blockchain, next would be cash (largely for historical reasons), the hardest to actually spend would be the monero. Now if we presume matheusmoreira point about banks was just a red herring, then your follow on is just one too, since the bit regarding KYC/AML compliance purchases/transactions was a response to that.